C Blog

C Programming

Tiny C Projects

C Brain Teasers

NCurses

XML and JSON

Curl

Online Training

Source Code File 06-01_nodevalue1

06-01_nodevalue1.c

#include <stdio.h>
#include <stdlib.h>
#include <libxml/parser.h>

int main()
{
    const char filename[] = "sample.xml";
    xmlDocPtr doc;
    xmlNodePtr root,node;
    xmlChar *value;

    doc = xmlParseFile(filename);
    if( doc==NULL )
    {
        fprintf(stderr,"Unable to open %s\n",filename);
        exit(1);
    }

    root = xmlDocGetRootElement(doc);
    node = root->children;
    while( node!=NULL )
    {
        if( !xmlStrcmp(node->name,(const xmlChar *)"lastName"))
        {
            value = xmlNodeListGetString(doc,node->children,1);
            printf("Value of <%s> is '%s'\n",node->name,value);
            xmlFree(value);
            break;
        }
        node = node->next;
    }

    xmlFreeDoc(doc);

    return(0);
}

Output

Value of <lastName> is 'Sinister'

Notes

* As with all XML data, this code is aware of the structure of the sample.xml file. It knows that element <lastName> is a top-level element (below the root) and that its value is a string.